Means for fastening rolls to shafts.



L. L. SIBLEY.

MEANS FOR FASTENlNG ROLLS T0 SHAFTS.

APPLICATION FILED MAR. 6. W18.

Patented Got. 15, 1918.

LEON L.

SIBLEY, 0F MONROE BRIDGE, MIASSACHUSETTS.

MEANS FOR FASTENING- ROLLS T0 SHAFTS.

Specification of Letters Patent.

Patented oct. 15, ieis Application filed March 8, 1918. Serial No.220,779.

certain new and useful Improvements in Means for Fastening Rolls toshafts, of which the following is a specification, reference being hadto the accompanying drawings. 1

his invention relates to certain improvements in means for fasteningrolls to shafts and has relation more particularly to a device of thisgeneral character for securing a mill roll of paper to the rewindingshaft or the like and it is an object of the invention to provide anovel and improved means whereby a roll of paper may be effectively heldby a re-winding shaft or the like without injury of the web.

It is also an object of the invention to provide a novel and improvedmeans of this general character including a collar surrounding the shaftand ada ted toextend within an end portion of t e bore of the rolltogether with means for expanding the outer end portion of the collarfor frictionally engaging the roll.

Another object of the invention is to provide a novel and improvedmeans'for fastening a roll paper or'the like to a shaft including acollar surrounding the shaft and adapted to extend .within the bore ofthe paper roll together with an expanding memer coacting with an endportion of the collar for causing said end portion of the collar tofrictionally engage the roll and wherein the shaft is rovided with meansfor forcing the expanding member inwardly of the collar.

A still further object of the invention is to provide a novel andimproved means of this type including an expansible collar surroundingthe sleeve together with an expanding member movable longitudinally ofthe shaft and movable inwardly of the collar to expand the same ahd amember carried by the shaft for forcing the expanding member inwardly ofthe collar together with means operating automatically to impart outwardmovement to the expanding member when the forcing member is moved awayfrom the collar.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of my improved meansfor fastening rolls to shafts whereby certain important advantages areattained and the device rendered simpler, less expensive andotherwise'more convenient and advanta eons foruse, as will .behereinafter more fully set forth.

The novel features of my invention will hereinafter be definitelyclaimed.

In order that my invention may be the better understood, I will nowproceed to describe the same with reference to the ac- ,companyingdrawings, wherein:

Figure 1 is a view in elevation illustrating a means for fastening aroll to a shaft constructed. in accordance with an embodiment of myinvention; and

Fig. 2 is a longitudinal sectional view taken through the structure asdisclosed in Fig. 1 with a shaft and certain of the-parts in elevation.

disposed through the bore of a mill roll of paper and especially of aroll to be slitted.

Coacting with the opposite end portions 5 of the bore of the roll arethe collars C surrounding the shaft 1 and movable longitudinallythereof. The inner ends of the collars C extend within the opposite endportions of the bore of the roll and contact one with the other whilethe outer end portions pf the bore of each of the collars is enlargedand said collar throughout the extent of said enlarged or counter-boreis slitted so that said outer portion of the collar may be expanded tofrictionally engage the roll so that the roll may be effectively se-'cured to the shaft. Coacting with the outer or slitted end portions ofeach of the rolls is an expanding member M tubular in form and slidablymounted upon the shaft 1. The inner end portion of the member M isadapted to'extend within the outer end portion of the coacting collar Cand at a predetermined point intermediate its length the expandingmember M is provided with the beveled shoulder or annular cam 3 whichserves to expand the slitted end portion of the collar C when the memberM is forced inwardly thereof. Threaded upon the shaft 1 and coactingwith the outer end of each of the members M is a nut N which may bereadily turned byhand and which. afi'ords to the member inwardly ofthecoacting collar G in order to efiect the desired expansion of the outerend portion of the collar C.

It is also preferred that the collar C have inwardly directed pin 7 orthe like extending within the groove 2 so that the collar is heldagainst rotation around the shaft 1 whereby the expanding of the outerend portion of said collar C is materially facilitated.

The collars C, members M and nuts N are properly positioned upon theshaft 1 after the shaft has been disposed through the bore .of the millroll and, as is believed to be clearly apparent to those skilled in theart to which my present invention appertains, these elements may bereadily positioned irrespective of the width of the web comprised in theroll.

In order'to facilitate the outward movement of the expanding member Mrelative to its coacting collar C when a nut N engageable with themember M is moved in a direction away from the collar C, I provide theexpansible member 5 seated within the en-' larged portion orcounter-bore 6 of the col lar C and which is compressed by the member Mwhen said member is forced inwardly of the collar 0. As herein disclosedthe expansible member 5 comprises a coil spring encircling the shaft 1.

iaeneei arrangement and formation of the several parts herein shown incarrylng out my 1nvention in practice except; as hereinafter claimed.

I claim:

In combination with a shaft insertible through the bore of a paper roll,a pair of collars loosely surrounding said shaft and adapted to extendwithin the bore of the paper roll through opposite ends thereof, theinner ends of said collars contacting, the outer portions of the collarsbeing slitted whereby the same may be expanded and the outer end portionof the bore of each of said collars being enlarged, members looselysurrounding the shaft and extending within the slitted end portions ofthe collars to expand the same, a coil spring within the enlargedportion of the bore of each of the collars and surrounding the shaft,said spring being interposed between the inner end of the member and theinner end of the enlarged portion of the bore of the collar forautomatically moving the member away .from the collar, members mountedupon the shaft outwardly of the first members and contacting with saidfirst named members to force the same inwardly of the collars to expandthe outer end portions of the collars and for placing the spring undertension, and means carried by each of the collars coacting with theshaft for holding the same against rotationabout'the shaft.

In testimony whereof I hereunto aifix my signature in the presence oftwo witnesses.

LEON L. SIBLEY.

Witnesses:

L. HALsEN Mosmn, ALFRED S. CLARK.

